package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.entity.Setmeal;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Override
    public void saveWithFlavor(DishDTO dishDTO){
        log.info("存到dish表和口味表中");
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);
        Long dishId = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors != null && flavors.size() > 0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
            dishFlavorMapper.insertBatch(flavors);
        }
    }
    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        log.info("菜品分页查询");
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);
        long total = page.getTotal();
        List<DishVO> records = page.getResult();
        return new PageResult(total,records);
    }
    @Override
    public void deleteBatch(List<Long> ids) {
        log.info("批量删除菜品：{}",ids);
        for(Long id:ids){
            Dish dish = dishMapper.getById(id);
            if(dish.getStatus() == StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
        if(setmealIds != null && setmealIds.size() > 0){
            //当前菜品有在售的套餐
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        for(Long id : ids){
            dishMapper.deleteById(id);
            dishFlavorMapper.deleteByDishId(id);
        }
    }
    @Override
    public DishVO getByIdWithFlavor(Long id) {
        log.info("根据id查询菜品数据：{}", id);
        Dish dish = dishMapper.getById(id);
        List<DishFlavor> dishFlavors = dishFlavorMapper.getByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavors);
        return dishVO;
    }
    @Override
    @Transactional
    public void update(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        List<DishFlavor> dishFlavors= dishDTO.getFlavors();
        dishFlavorMapper.deleteByDishId(dishDTO.getId());
        dishFlavors.forEach(dishFlavor -> dishFlavor.setDishId(dishDTO.getId()));
        dishMapper.update(dish);
        if(dishFlavors != null && dishFlavors.size() > 0){
            dishFlavorMapper.insertBatch(dishFlavors);
        }
    }
    @Override
    public void startOrStop(Integer status,Long id) {
        Dish dish = new Dish();
        dish = dishMapper.getById(id);
        dish.setStatus(status);
        dishMapper.update(dish);
    }
}
